期刊
CHEMICAL ENGINEERING & TECHNOLOGY
卷 40, 期 9, 页码 1619-1629出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201600105
关键词
Desiccants; Moisture absorption; Natural-fiber blends; Rice husks; Water absorption
资金
- Universiti Kebangsaan Malaysia [DLP-2013-015, GGPM-2012027]
The use of rice husks (RHs), treated RHs, and blends thereof as desiccants was studied. Bare RHs, treated RHs, and blends were characterized, and their water absorbances compared. Acid-treated RHs showed better moisture absorbance than alkali-treated RHs and hence were used to prepare blends. Moisture absorption of RH materials and silica gel were compared. Blends with a higher content of acid-treated RHs showed higher water and moisture absorbency. The moisture absorbency of the blends was enhanced, and they exceeded the silica-gel limit at 48 h of exposure time. The higher absorbency in blends with higher contents of acid-treated RHs is likely due to higher porosity and improved adhesion properties owing to surface OH groups. Moreover, RH blends require shorter regeneration times than silica gel.
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